Add git support to which_scm utility

          --- old/usr/src/tools/scripts/which_scm.sh
          +++ new/usr/src/tools/scripts/which_scm.sh

   1    1  #!/usr/bin/ksh -p
   2    2  #
   3    3  # CDDL HEADER START
   4    4  #
   5    5  # The contents of this file are subject to the terms of the
   6    6  # Common Development and Distribution License (the "License").
   7    7  # You may not use this file except in compliance with the License.
   8    8  #
   9    9  # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10   10  # or http://www.opensolaris.org/os/licensing.
  11   11  # See the License for the specific language governing permissions
  12   12  # and limitations under the License.
  13   13  #
  14   14  # When distributing Covered Code, include this CDDL HEADER in each
  15   15  # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16   16  # If applicable, add the following below this CDDL HEADER, with the
  17   17  # fields enclosed by brackets "[]" replaced with your own identifying
  18   18  # information: Portions Copyright [yyyy] [name of copyright owner]
  19   19  #
  20   20  # CDDL HEADER END
  21   21  #
  22   22  
  23   23  #
  24   24  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  25   25  # Use is subject to license terms.
  26   26  #
  27   27  # ident "%Z%%M% %I%     %E% SMI"
  28   28  #
  29   29  
  30   30  # which_scm outputs two strings: one identifying the SCM in use, and
  31   31  # the second giving the root directory for the SCM, if known, or just
  32   32  # the current working directory if not known.
  33   33  
  34   34  # There are three distinct types of SCM systems we can detect.  The first
  35   35  # type have a control directory per directory (RCS and SCCS), with no other
  36   36  # structure.  The second type have a control directory in each subdirectory
  37   37  # within a tree (CVS and SVN).  The last type have a single control
  38   38  # directory at the top of the tree (Teamware and Mercurial).
  39   39  
  40   40  # If the common CODEMGR_WS variable is set, then we look there for the
  41   41  # SCM type and bail out if we can't determine it.
  42   42  
  43   43  # If that variable is not set, then we start in the current directory
  44   44  # and work our way upwards until we find the top of the tree or we
  45   45  # encounter an error.
  46   46  
  47   47  # We do handle nested SCM types, and report the innermost one, but if
  48   48  # you nest one of the "second type" systems within another instance of
  49   49  # itself, we'll keep going upwards and report the top of the nested
  50   50  # set of trees.
  51   51  

  52   52  
  53   53  # Check for well-known tree-type source code management (SCM) systems.
  54   54  function primary_type
  55   55  {
  56   56          typeset scmid
  57   57  
  58   58          [ -d "$1/Codemgr_wsdata" ] && scmid="$scmid teamware"
  59   59          [ -d "$1/.hg" ] && scmid="$scmid mercurial"
  60   60          [ -d "$1/CVS" ] && scmid="$scmid cvs"
  61   61          [ -d "$1/.svn" ] && scmid="$scmid subversion"
       62 +        [ -d "$1/.git" ] && scmid="$scmid git"
  62   63          echo $scmid
  63   64  }
  64   65  
  65   66  if [[ -n "$CODEMGR_WS" ]]; then
  66   67          if [[ ! -d "$CODEMGR_WS" ]]; then
  67   68                  print -u2 "which_scm: $CODEMGR_WS is not a directory."
  68   69                  exit 1
  69   70          fi
  70   71          set -- $(primary_type "$CODEMGR_WS")
  71   72          if [[ $# != 1 ]]; then

  72   73                  set -- unknown
  73   74          fi
  74   75          echo "$1 $CODEMGR_WS"
  75   76          exit 0
  76   77  fi
  77   78  
  78   79  ORIG_CWD=$(pwd)
  79   80  
  80   81  if [[ -d RCS ]]; then
  81   82          echo "rcs $ORIG_CWD"
  82   83          exit 0
  83   84  fi
  84   85  
  85   86  # If it's not Teamware, it could just be local SCCS.
  86   87  LOCAL_TYPE=
  87   88  [[ -d SCCS ]] && LOCAL_TYPE="sccs"
  88   89  
  89   90  # Scan upwards looking for top of tree.
  90   91  DIR=$ORIG_CWD
  91   92  CWD_TYPE=$(primary_type "$DIR")

  92   93  SCM_TYPE=
  93   94  while [[ "$DIR" != / ]]; do
  94   95          set -- $(primary_type "$DIR")
  95   96          if [[ $# > 1 ]]; then
  96   97                  echo "unknown $ORIG_CWD"
  97   98                  exit 0
  98   99          fi
  99  100          SCM_TYPE="$1"
 100  101          # We're done searching if we hit either a change in type or the top
 101  102          # of a "third type" control system.
 102      -        if [[ "$SCM_TYPE" != "$CWD_TYPE" || "$SCM_TYPE" == mercurial || \
 103      -            "$SCM_TYPE" == teamware ]]; then
      103 +        if [[ "$SCM_TYPE" != "$CWD_TYPE" || "$SCM_TYPE" == git || \
      104 +            "$SCM_TYPE" == mercurial || "$SCM_TYPE" == teamware ]]; then
 104  105                  break
 105  106          fi
 106  107          PREVDIR="$DIR"
 107  108          DIR=$(dirname "$DIR")
 108  109  done
 109  110  
 110  111  # We assume here that the system root directory isn't the root of the SCM.
 111  112  
 112  113  # Check for the "second type" of repository.  In all cases, we started
 113  114  # out in the tree and stepped out on the last iteration, so we want

 114  115  # $PREVDIR.
 115  116  if [[ "$CWD_TYPE" == cvs || "$CWD_TYPE" == subversion ]]; then
 116  117          echo "$CWD_TYPE $PREVDIR"
 117  118          exit 0
 118  119  fi
 119  120  
 120  121  # If we still don't know what it is, then check for a local type in the
 121  122  # original directory.  If none, then we don't know what it is.
 122  123  if [[ -z "$SCM_TYPE" ]]; then
 123  124          if [[ -z "$LOCAL_TYPE" ]]; then
 124  125                  SCM_TYPE=unknown
 125  126          else
 126  127                  SCM_TYPE=$LOCAL_TYPE
 127  128                  DIR=$ORIG_CWD
 128  129          fi
 129  130  fi
 130  131  
 131  132  echo "$SCM_TYPE $DIR"
 132  133  exit 0

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